Today we are taking about Boulder Opal. It is also known as Australian Boulder Opal, because it can be found in Australia only. Australia is the only source in the world, where you can find Boulder Opal. It usually comes in deep colors like deep blue and deep green with some kind of texture on it. Boulder Opal is the 2nd highest priced opal in the world after black opal. It is also the most precious and most durable opal. It comes from the veins of Iron stones after that it gets cut through its mother stone which is iron stone. Boulder opal is durable gemstone because there are two layers in it. One layer on the back side is of Iron and on the front side; a very thin layer of opal makes it complete boulder opal gemstone. The hardness of Boulder opal is 5.5 to 6.5, but due to iron part, its hardness goes very high. Hence it is very easy to set boulder opal in any shape or size. In the market, mostly you’ll find the free sized boulder opal but at D...
